active-model-example.rb

  class FacilitiesServicesForm

    include ActiveModel::Validations
    include ActiveModel::Conversion
    extend ActiveModel::Naming

    # These are sort of like the has_many relation
    attr_accessor :facilities_offerred,
                  :services_offerred
    
    def initialize(params = {})
      @facilities_offerred = []
      @services_offerred = []
      assign(params) if params.present?
    end

    def load(args)
      load_facilities
      load_services_offerred
      self
    end
    
    def assign(params)
      assign_facilities(params)
      assign_services(params)
      self
    end
    
    def save(args)
      save_facilities
      save_trade_services
      true
    end
    
  end

## show action:
## f = FacilitiesServicesForm.new
## f.load(some_models)

## Create action:
## f = FacilitiesServicesForm.new(params)
## f.save
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